American Fibertek PSR-1S - Manual (Page 4)

FUNCTIONAL DESCRIPTION
The SR-20 sub-rack is a standard 19" x 5.25" frame designed to accommodate up to
fourteen fiber optic plug-in cards along with a PSR series power supply. The SR-20R
Redundant Power Supply frame can accommodate up to eleven plug-in cards.
SYSTEM COMPATIBILITY
Any plug in card with the model number beginning with the letter "R" can be inserted into
any of the fourteen application slots on the left-hand side of the SR-20. (Eleven slots for
the SR-20R.)
INSTALLATION
THIS INSTALLATION OF THIS UNIT SHOULD BE MADE BY A QUALIFIED SERVICE
PERSON(S) AND MUST CONFORM TO ALL LOCAL CODES.
The SR-20 may be mounted, using standard hardware, in an upright position, with the
backplane upward, inside the cabinet (see diagram below). It is important, as with any
electronic equipment, to provide sufficient airflow to prevent over heating in the cabinet.
At least 1 7/8" (1RU) of space should be allowed above and below the SR-20 to provide
air flow. If more than one SR- 20 is installed, forced airflow may be necessary depending
upon the number of plug-in cards used in the over-all installation. It is necessary to add
a 1RU fan unit at the top of every three SR-20 sub-racks with 1U spacing between them.
All applications cards are inserted in a similar manner. Any card may be used in any slot.
Insert the card all the way until the edge fingers meet the internal bus connector and the
front panel is even with the front of the sub-rack. Then secure the ¼ turn fasteners by
pushing with a small screwdriver, turning the screw 90 degrees clockwise and releasing
pressure.
POWER SUPPLY
The far right hand position of the SR-20 is only compatible with a PSR series plug in
power supply. Please refer to PSR-1 or PSR-2 instructions. The SR-20R allows for two
power supplies operating as automatic takeover redundant supply configuration. A PSR-
1 Master and PSR-1 Slave or two PSR-1H power supplies are required for this feature.
For details, see the PSR-1 instructions or consult the factory.
SERVICE INFORMATION
Please refer all service inquiries to:
AMERICAN FIBERTEK,INC
120 Belmont Drive
Somerset, NJ 08873
Phone (732) 302-0660
FAX (732) 302-0667
E-mail
[email protected]
INSTALLATION AND OPERATION INSTRUCTIONS
PSR-1, PSR-1M, PSR-1S Plug-in Power Supplies
SYSTEM COMPATIBILITY
4